/**
 * 远光Gris平台3.0版本 http://www.ygsoft.com/ Grace [Gris Application Cloud-Computing
 * Extension]
 * 
 * 上传组件用
 * 
 * 版本：
 * zhou ye 2012-7-6 创建
 */
jQuery.extend({
	

    createUploadIframe: function(id, uri)
	{
			//create frame
            var frameId = 'jUploadFrame' + id;
            var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
//			if(window.ActiveXObject)
//			{
//                if(typeof uri== 'boolean'){
					iframeHtml += ' src="' + 'javascript:false' + '"';
//                }
//                else if(typeof uri== 'string'){
//					iframeHtml += ' src="' + uri + '"';
//
//                }
//			}
			iframeHtml += ' />';
			jQuery(iframeHtml).appendTo(document.body);
            return jQuery('#' + frameId).get(0);			
    },
    createUploadForm: function(id, fileElementId, data)
	{
		//create form	
		var formId = 'jUploadForm' + id;
		var fileId = 'jUploadFile' + id;
		var form = jQuery('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');	
		if(data)
		{
			for(var i in data)
			{
				jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
			}			
		}
		var oldElement = jQuery('#' + fileElementId);
		var newElement = jQuery(oldElement).clone(true);
		jQuery(oldElement).attr('id', fileId);
		jQuery(oldElement).before(newElement);
		jQuery(oldElement).appendTo(form);

		//set attributes
		jQuery(form).css('position', 'absolute');
		jQuery(form).css('top', '-1200px');
		jQuery(form).css('left', '-1200px');
		jQuery(form).appendTo('body');		
		return form;
    },

    ajaxFileUpload: function(s) {
        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout		
        s = jQuery.extend({}, jQuery.ajaxSettings, s);
        var id = new Date().getTime();
		var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));
		var io = jQuery.createUploadIframe(id, s.secureuri);
		var frameId = 'jUploadFrame' + id;
		var formId = 'jUploadForm' + id;		
        // Watch for a new set of requests
        if ( s.global && ! jQuery.active++ )
		{
			jQuery.event.trigger( "ajaxStart" );
		}            
        var requestDone = false;
        // Create the request object
        var xml = {}   
        if ( s.global )
            jQuery.event.trigger("ajaxSend", [xml, s]);
        // Wait for a response to come back
        var uploadCallback = function(isTimeout)
		{			
			var io = document.getElementById(frameId);
            try 
			{				
				if(io.contentWindow)
				{
					 xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
                	 xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
					 
				}else if(io.contentDocument)
				{
					xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
                	xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
				}						
            }catch(e)
			{
				alert(e);
			}
            if ( xml || isTimeout == "timeout") 
			{				
                requestDone = true;
                var status;
                if(xml!=null && xml.responseText =="文件名非法。"){
					alert("文件名非法");
                    status = "error";
				}else{
	                try {
	                    status = isTimeout != "timeout" ? "success" : "error";
	                    // Make sure that the request was successful or notmodified
	                    if ( status != "error" )
						{
	                        // process the data (runs the xml through httpData regardless of callback)
	                        var data = jQuery.uploadHttpData( xml, s.dataType );    
	                        // If a local callback was specified, fire it and pass it the data
	                        if ( s.success )
	                            s.success( data, status );
	    
	                        // Fire the global callback
	                        if( s.global )
	                            jQuery.event.trigger( "ajaxSuccess", [xml, s] );
	                    } else
	                        alert(s);
	                } catch(e) 
					{
	                	alert(e.message);
	                    status = "error";
	                }
				}
                // The request was completed
                if( s.global )
                    jQuery.event.trigger( "ajaxComplete", [xml, s] );

                // Handle the global AJAX counter
                if ( s.global && ! --jQuery.active )
                    jQuery.event.trigger( "ajaxStop" );

                // Process result
                if ( s.complete )
                    s.complete(xml, status);

                jQuery(io).unbind()

                setTimeout(function(){	
                	try 
					{
						jQuery(io).remove();
						jQuery(form).remove();	
					} catch(e) 
					{
						//jQuery.handleError(s, xml, null, e);
						alert(e);
					}									

				}, 100)

                xml = null
            }
        }
        // Timeout checker
        if ( s.timeout > 0 ) 
		{
            setTimeout(function(){
                // Check to see if the request is still happening
                if( !requestDone ) uploadCallback( "timeout" );
            }, s.timeout);
        }
        try 
		{

			var form = $('#' + formId);
			form.attr('action', s.url);
			form.attr('method', 'POST');
			form.attr('target', frameId);
			form.append("<INPUT TYPE='HIDDEN' NAME='remark' VALUE='"+s.remark+"'/>");
			form.attr('onsubmit', "document.charset='utf-8'");
			form.attr('accept-charset', "utf-8");
            if(form.encoding)
			{
				form.attr('encoding', 'utf-8');      			
            }
            else
			{	
				form.attr('enctype', 'multipart/form-data');			
            }		
            /**
             * 增加业务参数处理add by yinlei
             */
            if(s.businessParams){
            	var params = s.businessParams;
            	for(var i in params){
            		form.append("<input type='hidden' name='" + i + "' value='" + $.toJSON(params[i]) + "'/>");
            	}
            }
            form.get(0).submit();
        } catch(e) 
		{			
            //jQuery.handleError(s, xml, null, e);
        	alert("error: " + e.message);
        }
		
		jQuery('#' + frameId).load(uploadCallback);
        return {abort: function () {}};	
    },

    uploadHttpData: function( r, type ) {
        var data = !type;
        data = type == "xml" || data ? r.responseXML : r.responseText;
        // If the type is "script", eval it in global context
        if ( type == "script" )
            jQuery.globalEval( data );
        // Get the JavaScript object, if JSON is used.
        if ( type == "json" )
            eval( "data = " + data );
        // evaluate scripts within html
        if ( type == "html" )
            jQuery("<div>").html(data).evalScripts();

        return data;
    },
    
	doSaveAs : function(params){
    	//webkit使用form提交数据会留空白窗口，改为iframe请求
    	if ($.ecp.utils.webKitClient()) {
    		if (!params) return;
    		var urlParam = "";
    		for (var i in params) {
    			urlParam += i + "=" + encodeURI(params[i]) + "&";
    		}
    		var serial = new Date().getTime();
    		if (urlParam.length > 0) {
    			urlParam += "timer=" + serial;
    		}
    		urlParam = urlParam.replace(/\"/g,"'");
    		urlParam = '/grm/ecp/FileAccessServlet?' + urlParam;
    		var frameId = 'jDownloadFrame';
    		var iframe = document.getElementById(frameId);
    		if (!iframe) {
    			var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
                iframeHtml += ' src="' + urlParam + '"';
                iframeHtml += ' />';
    			jQuery(iframeHtml).appendTo(document.body);
    		} else {
    			iframe.src=urlParam;
    		}
    	} else {
    		var form = $("<form id='saveAsForm' target='_blank' action='/grm/ecp/FileAccessServlet' method='post'></form>");
    		for(var key in params){
    			var input = $("<input name='" + key + "' value='" + params[key] + "'/>");
    			form.append(input);
    		}
    		$("body").append(form);
    		form.submit();
    		form.remove();
    		form = null;
    	}
	}
})

